KNSTRN
gene geneOn this page
Also known as FLJ14502SKAPkinastrinTRAF4AF1
Summary
KNSTRN (kinetochore localized astrin (SPAG5) binding protein, HGNC:30767) is a protein-coding gene on chromosome 15q15.1, encoding Small kinetochore-associated protein (Q9Y448). Essential component of the mitotic spindle required for faithful chromosome segregation and progression into anaphase.
Enables microtubule plus-end binding activity and protein homodimerization activity. Involved in several processes, including cellular response to epidermal growth factor stimulus; mitotic sister chromatid segregation; and regulation of attachment of spindle microtubules to kinetochore. Located in several cellular components, including kinetochore; microtubule cytoskeleton; and ruffle. Implicated in actinic keratosis and skin squamous cell carcinoma.
Source: NCBI Gene 90417 — RefSeq curated summary.
At a glance
- GWAS associations: 7
- Clinical variants (ClinVar): 85 total — 1 pathogenic
- Phenotypes (HPO): 77
- Cancer driver (intOGen): activating (oncogene-like) across 1 cancer types
- MANE Select transcript:
NM_033286
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:30767 |
| Approved symbol | KNSTRN |
| Name | kinetochore localized astrin (SPAG5) binding protein |
| Location | 15q15.1 |
| Locus type | gene with protein product |
| Status | Approved |
| Aliases | FLJ14502, SKAP, kinastrin, TRAF4AF1 |
| Ensembl gene | ENSG00000128944 |
| Ensembl biotype | protein_coding |
| OMIM | 614718 |
| Entrez | 90417 |
Gene structure
Transcript identifiers
Ensembl transcripts: 16 — 6 nonsense_mediated_decay, 5 protein_coding, 5 retained_intron
ENST00000249776, ENST00000416151, ENST00000448395, ENST00000557920, ENST00000559083, ENST00000559304, ENST00000559591, ENST00000559604, ENST00000560220, ENST00000560321, ENST00000560673, ENST00000560981, ENST00000561169, ENST00000561196, ENST00000561367, ENST00000608100
RefSeq mRNA: 3 — MANE Select: NM_033286
NM_001142761, NM_001142762, NM_033286
CCDS: CCDS42021, CCDS45226, CCDS45227
Canonical transcript exons
ENST00000249776 — 9 exons
| Exon | Start | End |
|---|---|---|
| ENSE00002551368 | 40393469 | 40394288 |
| ENSE00003464984 | 40391493 | 40391554 |
| ENSE00003543796 | 40387159 | 40387206 |
| ENSE00003556903 | 40391949 | 40392023 |
| ENSE00003582568 | 40382721 | 40383044 |
| ENSE00003608793 | 40383228 | 40383322 |
| ENSE00003663535 | 40389506 | 40389611 |
| ENSE00003680096 | 40386362 | 40386494 |
| ENSE00003790880 | 40389836 | 40389929 |
Expression profiles
Bgee: expression breadth ubiquitous, 233 present calls, max score 97.49.
FANTOM5 (CAGE): breadth ubiquitous, TPM avg 24.4622 / max 331.8308, expressed in 1794 samples.
FANTOM5 promoters (6 alternative TSS)
| Promoter ID | TPM avg | Samples expressed |
|---|---|---|
| 146102 | 24.1361 | 1791 |
| 146101 | 0.1568 | 40 |
| 146103 | 0.1013 | 31 |
| 146098 | 0.0526 | 3 |
| 146100 | 0.0094 | 3 |
| 146099 | 0.0060 | 3 |
Top tissues by expression
246 total, by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| ventricular zone | UBERON:0003053 | 97.49 | gold quality |
| right lobe of thyroid gland | UBERON:0001119 | 96.89 | gold quality |
| sperm | CL:0000019 | 96.47 | gold quality |
| left lobe of thyroid gland | UBERON:0001120 | 95.87 | gold quality |
| oocyte | CL:0000023 | 95.25 | gold quality |
| ganglionic eminence | UBERON:0004023 | 94.63 | gold quality |
| embryo | UBERON:0000922 | 94.62 | gold quality |
| right testis | UBERON:0004534 | 94.41 | gold quality |
| left testis | UBERON:0004533 | 94.38 | gold quality |
| thyroid gland | UBERON:0002046 | 94.23 | gold quality |
| testis | UBERON:0000473 | 92.85 | gold quality |
| primordial germ cell in gonad | CL:0000670 ∩ UBERON:0000991 | 92.79 | gold quality |
| tibialis anterior | UBERON:0001385 | 89.47 | silver quality |
| secondary oocyte | CL:0000655 | 87.28 | gold quality |
| stromal cell of endometrium | CL:0002255 | 87.12 | gold quality |
| ileal mucosa | UBERON:0000331 | 86.20 | gold quality |
| cortical plate | UBERON:0005343 | 85.60 | gold quality |
| adult organism | UBERON:0007023 | 84.66 | gold quality |
| adrenal tissue | UBERON:0018303 | 84.47 | gold quality |
| male germ line stem cell (sensu Vertebrata) in testis | CL:0000089 ∩ UBERON:0000473 | 84.42 | gold quality |
| smooth muscle tissue | UBERON:0001135 | 84.25 | gold quality |
| granulocyte | CL:0000094 | 83.76 | gold quality |
| monocyte | CL:0000576 | 83.76 | gold quality |
| leukocyte | CL:0000738 | 83.64 | gold quality |
| bone marrow cell | CL:0002092 | 83.62 | gold quality |
| rectum | UBERON:0001052 | 83.41 | gold quality |
| gastrocnemius | UBERON:0001388 | 83.24 | gold quality |
| bone marrow | UBERON:0002371 | 83.11 | gold quality |
| cerebellar hemisphere | UBERON:0002245 | 82.94 | gold quality |
| muscle of leg | UBERON:0001383 | 82.93 | gold quality |
Single-cell (SCXA)
Detected in 1 experiment(s), a significant marker in 1.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-ANND-3 | yes | 4.82 |
Regulation
Is transcription factor: no
miRNA regulators (miRDB)
54 targeting KNSTRN, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):
| miRNA | Max score | Avg score | miRNA target_count |
|---|---|---|---|
| HSA-MIR-188-3P | 100.00 | 68.76 | 1240 |
| HSA-MIR-548N | 99.98 | 71.94 | 4170 |
| HSA-MIR-5696 | 99.98 | 72.36 | 4487 |
| HSA-MIR-6891-5P | 99.98 | 66.53 | 1372 |
| HSA-MIR-4482-3P | 99.98 | 72.50 | 3147 |
| HSA-MIR-335-3P | 99.93 | 73.36 | 4958 |
| HSA-MIR-589-3P | 99.91 | 69.62 | 2088 |
| HSA-MIR-130B-5P | 99.83 | 68.50 | 1888 |
| HSA-MIR-6875-3P | 99.82 | 70.26 | 2983 |
| HSA-MIR-4760-5P | 99.80 | 69.88 | 1619 |
| HSA-MIR-6739-5P | 99.80 | 67.87 | 2806 |
| HSA-MIR-4668-5P | 99.79 | 70.58 | 3782 |
| HSA-MIR-6733-5P | 99.74 | 67.94 | 2759 |
| HSA-MIR-3059-5P | 99.70 | 69.93 | 2491 |
| HSA-MIR-6892-3P | 99.68 | 66.40 | 1178 |
| HSA-MIR-6516-3P | 99.65 | 68.57 | 1238 |
| HSA-MIR-8061 | 99.63 | 69.44 | 1411 |
| HSA-MIR-325 | 99.58 | 66.55 | 358 |
| HSA-MIR-516B-5P | 99.56 | 66.33 | 1495 |
| HSA-MIR-3153 | 99.55 | 67.59 | 2337 |
| HSA-MIR-642A-5P | 99.51 | 65.10 | 1152 |
| HSA-MIR-136-5P | 99.50 | 67.26 | 1153 |
| HSA-MIR-548G-3P | 99.48 | 68.67 | 2159 |
| HSA-MIR-766-3P | 99.47 | 65.24 | 1811 |
| HSA-MIR-4316 | 99.37 | 65.75 | 1360 |
| HSA-MIR-32-3P | 99.36 | 68.20 | 2517 |
| HSA-MIR-670-3P | 99.03 | 68.88 | 2404 |
| HSA-MIR-4699-5P | 98.99 | 67.50 | 1210 |
| HSA-MIR-3124-3P | 98.87 | 68.95 | 2123 |
| HSA-MIR-3190-5P | 98.87 | 64.89 | 1345 |
Literature-anchored findings (GeneRIF, showing 17)
- This paper identifies role of gene product of FLJ14502, named SKAP in the paper, in mitosis. SKAP promotes metaphase-to-anaphase transition by mediating seperase activation after spindle assembly checkpoint is satisfied in mitosis. (PMID:19667759)
- SKAP cooperates with CENP-E to orchestrate dynamic kinetochore-microtubule interaction for faithful chromosome segregation. (PMID:22110139)
- SKAP constitutes a dynamic link between spindle microtubule plus-ends and mitotic chromosomes to achieve faithful cell division. (PMID:23035123)
- These findings suggest that SKAP promotes ultraviolet rays-induced cell apoptosis by negatively regulating the anti-apoptotic protein Prp19. (PMID:24718257)
- Findings suggest a role for kinetochore protein KNSTRN mutagenesis in cutaneous squamous cell carcinomas (SCCs) development. (PMID:25194279)
- Mechanistically, the N-terminal of SKAP binds to EB1, and its C terminus binds to IQGAP1 in migrating cells. (PMID:26242911)
- study reports presence of KNSTRN mutations in basal cell carcinomas (BCC); mutant KNSTRN disrupts sister chromatid cohesion and promotes genomic instability in functional assays; KNSTRN mutations in BCC appear to occur late in disease progression and are preferentially found in advanced tumors (PMID:26348826)
- KNSTRN Mutation, a Cutaneous Squamous Carcinoma-Specific Mutation is associated with Solid Tumors and Leukemias. (PMID:26433880)
- Molecular requirements for the inter-subunit interaction and kinetochore recruitment of SKAP and Astrin have been reported. (PMID:27095104)
- GSK3beta-SKAP-Kif2b signaling axis constitutes a dynamic link between spindle microtubule plus-ends and mitotic chromosomes to achieve faithful cell division. (PMID:27982129)
- Data show that aurora-B regulates end-on conversion in human cells and indicate a late role for SPAG5 protein (Astrin)-SKAP complex in the end-on conversion process. (PMID:28751710)
- The authors show that the Astrin-SKAP complex binds synergistically to microtubules with the Ndc80 complex to form an integrated interface. (PMID:28841134)
- Recurrent somatic mutation p.Ala40Glu in KNSTRN gene is associated with basal proliferating actinic keratosis in accordance with invasive squamous cell cardinomas. This supports the impact of basal proliferative pattern in terms of progression (PMID:30972880)
- KNSTRN promotes tumorigenesis and gemcitabine resistance by activating AKT in bladder cancer. (PMID:33452459)
- Src-mediated tyrosine phosphorylation of PRC1 and kinastrin/SKAP on the mitotic spindle. (PMID:33510346)
- SKAP interacts with Aurora B to guide end-on capture of spindle microtubules via phase separation. (PMID:34554241)
- Phosphorylation of small kinetochore-associated protein induced by GSK3beta promotes cell migration and invasion in esophageal cancer. (PMID:35201967)
Cross-species orthologs
3 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| danio_rerio | knstrn | ENSDARG00000074379 |
| mus_musculus | Knstrn | ENSMUSG00000027331 |
| rattus_norvegicus | Knstrn | ENSRNOG00000009334 |
Protein
Protein identifiers
Small kinetochore-associated protein — Q9Y448 (reviewed: Q9Y448)
Alternative names: Kinetochore-localized astrin-binding protein, Kinetochore-localized astrin/SPAG5-binding protein, TRAF4-associated factor 1
All UniProt accessions (9): Q9Y448, H0YKD4, H0YKF8, H0YLA7, H0YLH8, H0YM11, H0YN50, H0YNN6, V9GY01
UniProt curated annotations — full annotation on UniProt →
Function. Essential component of the mitotic spindle required for faithful chromosome segregation and progression into anaphase. Promotes the metaphase-to-anaphase transition and is required for chromosome alignment, normal timing of sister chromatid segregation, and maintenance of spindle pole architecture. The astrin (SPAG5)-kinastrin (SKAP) complex promotes stable microtubule-kinetochore attachments. Required for kinetochore oscillations and dynamics of microtubule plus-ends during live cell mitosis, possibly by forming a link between spindle microtubule plus-ends and mitotic chromosomes to achieve faithful cell division. May be involved in UV-induced apoptosis via its interaction with PRPF19; however, these results need additional evidences.
Subunit / interactions. Part of an astrin (SPAG5)-kinastrin (SKAP) complex containing KNSTRN, SPAG5, PLK1, DYNLL1 and SGO2. Interacts with SPAG5. Directly binds to microtubules, although at relatively low affinity. Interacts with CENPE; this interaction greatly favors microtubule-binding. Interacts with DSN1/MIS13; leading to localization to kinetochores. Interacts with MAPRE1/EB1; leading to localization to the microtubule plus ends. Interacts with PRPF19. Interacts with DYNLL1. Interacts with MAP4.
Subcellular location. Nucleus. Chromosome. Centromere. Kinetochore. Cytoplasm. Cytoskeleton. Spindle pole. Microtubule organizing center.
Tissue specificity. Widely expressed, including in skin.
Disease relevance. Roifman-Chitayat syndrome (ROCHIS) [MIM:613328] An autosomal recessive digenic disorder characterized by global developmental delay, variable neurologic features such as seizures and ataxia, optic atrophy, dysmorphic facial features, distal skeletal anomalies, and recurrent invasive infections due to combined immunodeficiency. The disease is caused by variants affecting distinct genetic loci, including the gene represented in this entry. Caused by the simultaneous occurrence of homozygous mutations in PIK3CD and KNSTRN. Cutaneous squamous cell carcinomas (SCC): A malignancy of the skin. The hallmark of cutaneous SCC is malignant transformation of normal epidermal keratinocytes. Disease susceptibility is associated with variants affecting the gene represented in this entry. Variant Phe-24 appears specific for UV-associated malignancies.
Domain organisation. The coiled coil regions mediate binding to kinetochores.
Induction. Degraded at the end of mitosis. Down-regulated upon exposure to nitric oxide.
Isoforms (3)
| UniProt ID | Names | Canonical? |
|---|---|---|
| Q9Y448-1 | 1 | yes |
| Q9Y448-2 | 2 | |
| Q9Y448-3 | 3 |
RefSeq proteins (3): NP_001136233, NP_001136234, NP_150628* (*=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR033373 | SKAP | Family |
UniProt features (14 total): sequence variant 4, sequence conflict 3, coiled-coil region 2, splice variant 2, chain 1, region of interest 1, modified residue 1
Structure
Experimental structures (PDB)
0 structures.
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-Q9Y448-F1 | 68.55 | 0.38 |
Functional residue map
Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.
Post-translational modifications (1): 128
Function
Pathways and Gene Ontology
Reactome pathways
0 pathways
MSigDB gene sets: 417 (showing top):
GOBP_CHROMOSOME_ORGANIZATION, GOBP_ATTACHMENT_OF_SPINDLE_MICROTUBULES_TO_KINETOCHORE, GOBP_CHROMOSOME_LOCALIZATION, GRAESSMANN_APOPTOSIS_BY_DOXORUBICIN_DN, GOCC_RUFFLE, GOBP_RESPONSE_TO_EPIDERMAL_GROWTH_FACTOR, GOCC_MICROTUBULE_ORGANIZING_CENTER, PATIL_LIVER_CANCER, GOBP_ORGANELLE_FISSION, FISCHER_G2_M_CELL_CYCLE, GOBP_REGULATION_OF_CELL_CYCLE, GOCC_CENTROSOME, GOBP_MITOTIC_NUCLEAR_DIVISION, GOBP_REGULATION_OF_ATTACHMENT_OF_SPINDLE_MICROTUBULES_TO_KINETOCHORE, GOBP_MITOTIC_CELL_CYCLE
GO Biological Process (8): mitotic sister chromatid segregation (GO:0000070), microtubule cytoskeleton organization (GO:0000226), spindle organization (GO:0007051), chromosome segregation (GO:0007059), cell migration (GO:0016477), cell division (GO:0051301), regulation of attachment of spindle microtubules to kinetochore (GO:0051988), cellular response to epidermal growth factor stimulus (GO:0071364)
GO Molecular Function (3): protein homodimerization activity (GO:0042803), microtubule plus-end binding (GO:0051010), protein binding (GO:0005515)
GO Cellular Component (14): kinetochore (GO:0000776), spindle pole (GO:0000922), ruffle (GO:0001726), nucleus (GO:0005634), microtubule organizing center (GO:0005815), plasma membrane (GO:0005886), centriolar satellite (GO:0034451), microtubule plus-end (GO:0035371), mitotic spindle (GO:0072686), chromosome, centromeric region (GO:0000775), chromosome (GO:0005694), cytoplasm (GO:0005737), cytoskeleton (GO:0005856), microtubule (GO:0005874)
GO top-level categories
Rollup of top GO terms by namespace:
| Category | Terms |
|---|---|
| cellular anatomical structure | 4 |
| intracellular membraneless organelle | 3 |
| cell cycle process | 2 |
| spindle | 2 |
| microtubule cytoskeleton | 2 |
| sister chromatid segregation | 1 |
| mitotic nuclear division | 1 |
| mitotic cell cycle process | 1 |
| cytoskeleton organization | 1 |
| microtubule-based process | 1 |
| microtubule cytoskeleton organization | 1 |
| cell motility | 1 |
| cellular process | 1 |
| attachment of spindle microtubules to kinetochore | 1 |
| regulation of cell cycle process | 1 |
| response to epidermal growth factor | 1 |
| cellular response to growth factor stimulus | 1 |
| identical protein binding | 1 |
| protein dimerization activity | 1 |
| microtubule binding | 1 |
| binding | 1 |
| condensed chromosome, centromeric region | 1 |
| supramolecular complex | 1 |
| cell leading edge | 1 |
| plasma membrane bounded cell projection | 1 |
| intracellular membrane-bounded organelle | 1 |
| membrane | 1 |
| cell periphery | 1 |
| centrosome | 1 |
| microtubule end | 1 |
| chromosomal region | 1 |
| intracellular anatomical structure | 1 |
| polymeric cytoskeletal fiber | 1 |
Protein interactions and networks
STRING
1094 interactions, top by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| KNSTRN | SPAG5 | Q96R06 | 934 |
| KNSTRN | CENPE | Q02224 | 808 |
| KNSTRN | CHMP1B | Q7LBR1 | 749 |
| KNSTRN | STAMBP | O95630 | 716 |
| KNSTRN | VPS4A | Q9UN37 | 669 |
| KNSTRN | SKAP1 | Q86WV1 | 658 |
| KNSTRN | SPAST | Q9UBP0 | 649 |
| KNSTRN | CLASP1 | Q7Z460 | 630 |
| KNSTRN | RASSF5 | Q8WWW0 | 619 |
| KNSTRN | SPOUT1 | Q5T280 | 589 |
| KNSTRN | DYNLL1 | P63167 | 585 |
| KNSTRN | SSRP1 | Q08945 | 582 |
| KNSTRN | APBB1IP | Q7Z5R6 | 578 |
| KNSTRN | NUF2 | Q9BZD4 | 542 |
| KNSTRN | NUMA1 | Q14980 | 508 |
IntAct
108 interactions, top by confidence:
| A | B | Type | Score |
|---|---|---|---|
| PRPF19 | AQR | psi-mi:“MI:0914”(association) | 0.790 |
| PRPF19 | PLRG1 | psi-mi:“MI:0914”(association) | 0.770 |
| MAPRE1 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.740 |
| KIF22 | KPNA4 | psi-mi:“MI:0914”(association) | 0.730 |
| DYNLL1 | BLTP3B | psi-mi:“MI:0914”(association) | 0.730 |
| SGF29 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.670 |
| DYNLL2 | BLTP3B | psi-mi:“MI:0914”(association) | 0.640 |
| IFT57 | IFT56 | psi-mi:“MI:0914”(association) | 0.640 |
| WASHC3 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| MAPRE3 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| PPL | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| BEX2 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| ABI2 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| OIP5 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| IFT20 | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| Mad2l1 | BUB1B | psi-mi:“MI:0915”(physical association) | 0.560 |
| HTT | KNSTRN | psi-mi:“MI:0915”(physical association) | 0.560 |
| MYCBP | AKAP8 | psi-mi:“MI:0914”(association) | 0.550 |
| KXD1 | HIP1 | psi-mi:“MI:0914”(association) | 0.530 |
| DEUP1 | HIP1 | psi-mi:“MI:0914”(association) | 0.530 |
| COPS7B | ZZEF1 | psi-mi:“MI:0914”(association) | 0.530 |
BioGRID (144): KNSTRN (Affinity Capture-RNA), KNSTRN (Affinity Capture-RNA), KNSTRN (Affinity Capture-RNA), KNSTRN (Affinity Capture-RNA), KNSTRN (Two-hybrid), KNSTRN (Two-hybrid), KNSTRN (Affinity Capture-MS), KNSTRN (Affinity Capture-MS), KNSTRN (Affinity Capture-MS), KNSTRN (Affinity Capture-MS), KNSTRN (Affinity Capture-MS), KNSTRN (Affinity Capture-MS), PRPF19 (Affinity Capture-MS), HSPA8 (Affinity Capture-MS), HSPA1A (Affinity Capture-MS)
ESM2 similar proteins: A0A0D9SF12, A2A8T7, A6H7E2, A6NF36, A6NFA0, A6NI87, E1C7U0, P03246, P03247, P0DO92, P14355, P14683, Q0VG49, Q1HVF6, Q32LN6, Q3KPU7, Q3KSS3, Q4V7D2, Q4ZG55, Q5DU28, Q5JX69, Q5JX71, Q5R7E2, Q5U4U4, Q642A3, Q6NRW0, Q6P1U0, Q6P4J6, Q6P9N1, Q6PEX7, Q6X4T0, Q7L3B6, Q7SYV9, Q7T346, Q80Y73, Q8BJS8, Q8CF25, Q8IWB6, Q8N6T0, Q8NCU1
Diamond homologs: Q6AXN6, Q9D9Z1, Q9Y448
SIGNOR signaling
2 interactions.
| A | Effect | B | Mechanism |
|---|---|---|---|
| AURKA | “down-regulates activity” | KNSTRN | phosphorylation |
| KNSTRN | “down-regulates activity” | KIF2B | relocalization |
Enriched among interaction partners
Reactome pathways and GO biological processes over-represented among this gene’s 98 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.
Reactome pathways:
| Pathway | Partners | Fold | FDR |
|---|---|---|---|
| Intraflagellar transport | 7 | 25.5× | 3e-06 |
| Loss of Nlp from mitotic centrosomes | 5 | 14.4× | 1e-03 |
| Loss of proteins required for interphase microtubule organization from the centrosome | 5 | 14.4× | 1e-03 |
| AURKA Activation by TPX2 | 5 | 13.8× | 1e-03 |
| Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal | 6 | 12.7× | 1e-03 |
| Recruitment of mitotic centrosome proteins and complexes | 5 | 12.4× | 2e-03 |
| Regulation of PLK1 Activity at G2/M Transition | 5 | 11.5× | 2e-03 |
| Recruitment of NuMA to mitotic centrosomes | 5 | 10.6× | 3e-03 |
GO biological processes:
| GO term | Partners | Fold | FDR |
|---|---|---|---|
| non-motile cilium assembly | 7 | 24.2× | 5e-06 |
| cell division | 14 | 7.7× | 2e-06 |
| protein transport | 10 | 5.2× | 2e-03 |
Disease & clinical
Cancer significance
From intOGen — cancer-driver classification: activating (oncogene-like) across 1 cancer types — SKCM.
Clinical variants and AI predictions
ClinVar
85 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 1 |
| Likely pathogenic | 0 |
| Uncertain significance | 57 |
| Likely benign | 9 |
| Benign | 1 |
Top pathogenic / likely-pathogenic (1)
| Variant ID | HGVS | Classification |
|---|---|---|
| 1064712 | NM_033286.4(KNSTRN):c.629del (p.Leu210fs) | Pathogenic |
SpliceAI
1306 predictions. Top by Δscore:
| Variant | Effect | Δscore |
|---|---|---|
| 15:40382931:G:GT | donor_gain | 1.0000 |
| 15:40384600:G:GT | donor_gain | 1.0000 |
| 15:40387205:GG:G | donor_gain | 1.0000 |
| 15:40387206:GG:G | donor_gain | 1.0000 |
| 15:40389486:A:AG | acceptor_gain | 1.0000 |
| 15:40389487:A:G | acceptor_gain | 1.0000 |
| 15:40389609:CAGG:C | donor_loss | 1.0000 |
| 15:40389611:GGT:G | donor_loss | 1.0000 |
| 15:40389612:GTA:G | donor_loss | 1.0000 |
| 15:40389613:T:G | donor_loss | 1.0000 |
| 15:40389825:T:TA | acceptor_gain | 1.0000 |
| 15:40389831:A:AG | acceptor_gain | 1.0000 |
| 15:40389831:AATAG:A | acceptor_gain | 1.0000 |
| 15:40389832:A:G | acceptor_gain | 1.0000 |
| 15:40389833:TAGG:T | acceptor_loss | 1.0000 |
| 15:40389834:A:AG | acceptor_gain | 1.0000 |
| 15:40389834:A:C | acceptor_loss | 1.0000 |
| 15:40389834:AG:A | acceptor_gain | 1.0000 |
| 15:40389834:AGG:A | acceptor_gain | 1.0000 |
| 15:40389835:G:GA | acceptor_loss | 1.0000 |
| 15:40389835:G:GG | acceptor_gain | 1.0000 |
| 15:40389835:GG:G | acceptor_gain | 1.0000 |
| 15:40389835:GGG:G | acceptor_gain | 1.0000 |
| 15:40389835:GGGA:G | acceptor_gain | 1.0000 |
| 15:40389928:AGGTA:A | donor_loss | 1.0000 |
| 15:40389929:GGTA:G | donor_loss | 1.0000 |
| 15:40389930:G:GG | donor_gain | 1.0000 |
| 15:40389930:GTAA:G | donor_loss | 1.0000 |
| 15:40389931:T:A | donor_loss | 1.0000 |
| 15:40391945:TTA:T | acceptor_loss | 1.0000 |
AlphaMissense
2052 scored. Top likely-pathogenic:
| Variant | Protein change | am_pathogenicity |
|---|---|---|
| 15:40389852:T:C | L203P | 0.987 |
| 15:40391985:T:C | F262L | 0.982 |
| 15:40391987:T:A | F262L | 0.982 |
| 15:40391987:T:G | F262L | 0.982 |
| 15:40389843:T:C | L200P | 0.979 |
| 15:40391997:G:C | A266P | 0.978 |
| 15:40389586:T:C | L189S | 0.974 |
| 15:40391977:T:C | L259P | 0.972 |
| 15:40391998:C:A | A266D | 0.967 |
| 15:40389598:T:C | L193S | 0.965 |
| 15:40389881:T:C | F213L | 0.952 |
| 15:40389883:T:A | F213L | 0.952 |
| 15:40389883:T:G | F213L | 0.952 |
| 15:40391986:T:C | F262S | 0.951 |
| 15:40393566:T:C | L307P | 0.948 |
| 15:40389570:G:C | A184P | 0.945 |
| 15:40389873:T:C | L210P | 0.945 |
| 15:40393584:T:C | L313P | 0.942 |
| 15:40391965:T:C | L255S | 0.934 |
| 15:40389565:T:C | L182S | 0.933 |
| 15:40389870:T:C | L209P | 0.932 |
| 15:40393485:T:C | L280P | 0.931 |
| 15:40392007:A:C | Q269P | 0.921 |
| 15:40392019:T:C | L273S | 0.921 |
| 15:40389544:T:C | L175P | 0.908 |
| 15:40393511:T:C | F289L | 0.903 |
| 15:40393513:C:A | F289L | 0.903 |
| 15:40393513:C:G | F289L | 0.903 |
| 15:40391985:T:A | F262I | 0.901 |
| 15:40389557:C:A | N179K | 0.896 |
dbSNP variants (sampled 300 via entrez): RS1000111067 (15:40391259 A>G), RS1000323465 (15:40389379 G>A,T), RS1000682260 (15:40386537 A>G), RS1000716312 (15:40392907 G>A,C), RS1000746002 (15:40394031 C>G), RS1000782154 (15:40387036 G>A), RS1000786349 (15:40382153 A>C,T), RS1000815187 (15:40386758 T>C), RS1000859848 (15:40381994 C>A), RS1000903339 (15:40380844 A>G), RS1001452766 (15:40382125 G>A), RS1001588586 (15:40382392 A>G), RS1001669424 (15:40383862 AAT>A), RS1001704109 (15:40394414 A>T), RS1001817315 (15:40388125 C>T)
Disease associations
OMIM: gene MIM:614718 | disease phenotypes: MIM:613328
GenCC curated gene-disease
Mondo (1): combined immunodeficiency with faciooculoskeletal anomalies (MONDO:0013226)
Orphanet (1): Combined immunodeficiency with facio-oculo-skeletal anomalies (Orphanet:221139)
HPO phenotypes
77 total (30 of 77 shown, HPO-id order):
| HPO | Term |
|---|---|
| HP:0000007 | Autosomal recessive inheritance |
| HP:0000010 | Recurrent urinary tract infections |
| HP:0000086 | Ectopic kidney |
| HP:0000122 | Unilateral renal agenesis |
| HP:0000306 | Abnormality of the chin |
| HP:0000316 | Hypertelorism |
| HP:0000348 | High forehead |
| HP:0000411 | Protruding ear |
| HP:0000431 | Wide nasal bridge |
| HP:0000455 | Broad nasal tip |
| HP:0000463 | Anteverted nares |
| HP:0000470 | Short neck |
| HP:0000490 | Deeply set eye |
| HP:0000609 | Optic nerve hypoplasia |
| HP:0000648 | Optic atrophy |
| HP:0000924 | Abnormality of the skeletal system |
| HP:0000938 | Osteopenia |
| HP:0000953 | Hyperpigmentation of the skin |
| HP:0000998 | Hypertrichosis |
| HP:0001249 | Intellectual disability |
| HP:0001251 | Ataxia |
| HP:0001263 | Global developmental delay |
| HP:0001319 | Neonatal hypotonia |
| HP:0001369 | Arthritis |
| HP:0001537 | Umbilical hernia |
| HP:0001761 | Pes cavus |
| HP:0001999 | Abnormal facial shape |
| HP:0002007 | Frontal bossing |
| HP:0002014 | Diarrhea |
| HP:0002020 | Gastroesophageal reflux |
GWAS associations
7 associations (top):
| Study | Trait | p-value |
|---|---|---|
| GCST002579_11 | Heschl’s gyrus morphology | 5.000000e-06 |
| GCST005846_5 | Heart rate response to recovery post exercise (10 sec) | 1.000000e-12 |
| GCST005847_7 | Heart rate response to recovery post exercise (20 sec) | 2.000000e-11 |
| GCST005850_4 | Heart rate response to recovery post exercise (30 sec) | 8.000000e-09 |
| GCST010725_23 | Malaria | 2.000000e-06 |
| GCST010725_38 | Malaria | 3.000000e-06 |
| GCST010725_80 | Malaria | 7.000000e-06 |
EFO canonical traits (1, from GWAS)
| EFO ID | Trait name |
|---|---|
| EFO:0009185 | heart rate response to recovery post exercise |
MeSH disease descriptors (1)
| Descriptor | Name | Tree numbers |
|---|---|---|
| C567641 | Roifman-Chitayat Syndrome (supp.) |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: no
PharmGKB: 1 entry (VIP=true, CPIC=false)
CTD chemical–gene interactions
59 total (human), top 30 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| Valproic Acid | affects expression, increases expression | 2 |
| 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide | decreases expression | 2 |
| FR900359 | decreases phosphorylation | 1 |
| dicrotophos | decreases expression | 1 |
| daidzein | affects expression, affects cotreatment | 1 |
| triphenyl phosphate | affects expression | 1 |
| alpha-pinene | affects cotreatment, increases oxidation, increases abundance | 1 |
| bisphenol A | decreases expression | 1 |
| daidzin | affects cotreatment, affects expression | 1 |
| beta-lapachone | decreases expression | 1 |
| arsenite | affects binding, increases reaction | 1 |
| sulforaphane | increases expression | 1 |
| sodium arsenite | decreases expression | 1 |
| zinc chromate | decreases expression, increases abundance | 1 |
| potassium chromate(VI) | decreases expression, affects cotreatment | 1 |
| 2,3-bis(3’-hydroxybenzyl)butyrolactone | affects cotreatment, increases expression | 1 |
| coumarin | decreases phosphorylation | 1 |
| cupric oxide | decreases expression | 1 |
| methacrylaldehyde | increases abundance, affects cotreatment, increases oxidation | 1 |
| genistin | affects cotreatment, affects expression | 1 |
| diallyl trisulfide | decreases expression | 1 |
| epigallocatechin gallate | affects cotreatment, decreases expression | 1 |
| chromium hexavalent ion | increases abundance, decreases expression | 1 |
| glycitein | affects cotreatment, affects expression | 1 |
| 2-palmitoylglycerol | increases expression | 1 |
| 4-chloro-N-((4-(1,1-dimethylethyl)phenyl)methyl)-3-ethyl-1-methyl-1H-pyrazole-5-carboxamide | increases expression | 1 |
| glycitin | affects cotreatment, affects expression | 1 |
| palbociclib | decreases expression | 1 |
| jinfukang | increases expression | 1 |
| incobotulinumtoxinA | decreases expression | 1 |
Cellosaurus cell lines
1 cell lines: 1 transformed cell line
First 10 cell lines (id-ordered, not curated):
| Cellosaurus | Name | Category | Sex |
|---|---|---|---|
| CVCL_B2ZW | Abcam HEK293T KNSTRN KO | Transformed cell line | Female |
Clinical trials (associated diseases)
0 trials via MONDO — disease-level, not drug-specific.
Related Atlas pages
- Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): combined immunodeficiency with faciooculoskeletal anomalies